The term Christian has, of course, to do with our Lord and Savior Jesus Christ, but, in a wider sense it takes in all that Christ purchased with his sacrifice; The Universe. If Jesus would have wished for you to see, feel, touch, dream, or sense a concept, you may find it here.
However,
there are two very different reference works that God provided to us;
the Bible and Nature, from the Quark to the Cosmos.
Some Points on the Way to a Well Grounded Faith
Through the study of God's two books I have found the following to be worthy.